Stock bore is 42mm.
The OEM carb on a YZ465 is a 38MM Mikuni VM roundslide.
a yz what engine size? Probably about 2-4 seconds IF you can hang on AND keep it on the ground long enough to shift gears.
About 55-60 the most
60+
60-75 mph
60-65
I have a 2001 Yz 125 stock Gearing, Fmf Pipes. 60-65Mph
a yz 85 goes about any where between 60 and 70 m.p.h
60-75 mph
around 60-70mph
believe it or not, the kx 60 is faster a cause of it having a motor too powerful for the small, light frame, so yes, the kx 60 is faster than the yz 85